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ArcGIS Queries

ArcGIS Queries. Maneesh Sharma West Virginia GIS Technical Center Department of Geology and Geography West Virginia University Morgantown 26505 Maneesh.Sharma@mail.wvu.edu. Overview. Queries in feature classes Attribute Query Demonstration Location Query Demonstration

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ArcGIS Queries

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  1. ArcGIS Queries Maneesh Sharma West Virginia GIS Technical Center Department of Geology and Geography West Virginia University Morgantown 26505 Maneesh.Sharma@mail.wvu.edu

  2. Overview • Queries in feature classes • Attribute Query • Demonstration • Location Query • Demonstration • Query in Data driven Pages • Dynamic query • Demonstration • Questions

  3. Queries in a feature class • Attribute Query • “A query that extracts data/features from a layer based on the value of its attribute data” • Query can be • Simple query • Compound query • Subquery

  4. Simple Query • A query expression needs 3 components • Attribute Field Operator Field Attribute Value "AssessedAcres" >=0.19 • The result will show a set of selected features

  5. Simple Query • Different types of operators can be used • Calculations can be done • "AssessedAcres" >=0.12*100 Or "Perimeter" >="Acres" *10

  6. Compound Query • Multiple attribute and operators can be used to create compound query • Complex expressions can be created by using AND or OR "Perimeter" >=7361.83or"Acres" <=0.35

  7. Subqueries • A subquery is a nested query • Supported just by geodatabase data sources only • Will NOT work with shapefiles "Entity" NOT IN (SELECT"ENTITY"FROMBLDTYPES2) • Demonstration

  8. Location Query • A location query is based on their location relative to other features that meet certain conditions • Main types • Near • Intersect • Inside

  9. Location Query • Three things needed for query • Layer that contains features you want to select • Location relationship that needs to be analyzed • Layer that contains related features • “Building types within 2000 ft of selected parcel” • Demonstration

  10. Query in Data Driven Pages • Each layer can take advantage of the Data Driven Page setup • Layer has to have the page number from the index layer associated with the features • By setting the Page Definition by using page number, you can show or hide each feature on the map

  11. Query in Data Driven Pages • Demonstration

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